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kolbaska11 [484]
3 years ago
15

I WILL GIVE BRAINLIEST

Mathematics
1 answer:
Vaselesa [24]3 years ago
3 0

Answer:

no

Step-by-step explanation:

80-225*1/3=80-75=5

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Show workings please
Alenkinab [10]

Answer: x = 21°

Step-by-step explanation:

37 + 4x + (3x - 4) = 180°   Original Equation

37 + 4x + 3x - 4 = 180°   Commutative Property of Addition

7x + 33 = 180°   Combine like terms

7x = 148°  Subtract 33 from both sides

x = 21°   Divide both sides by 7

8 0
3 years ago
Butyric acid ( c3h7cooh) is a weak acid . what is the ph of a 0.0250 m solution of this acid. ka = 1.5 x 10-5 (2 decimal places)
Wewaii [24]

The pH of the weak acid is 3.21

Butyric acid is known as a weak acid, we need the concentration of [H+] formula of weak acid which is given by this equation :

[H^{+}]=\sqrt{Ka . Ma}

where [H+] is the concentration of ion H+, Ka is the weak acid ionization constant, and Ma is the acid concentration.

Since we know the concentration of H+, the pH can be calculated by using

pH = -log[H+]

From question above, we know that :

Ma = 0.0250M

Ka = 1.5 x 10¯⁵

By using the equation, we can determine the concentration of [H+]

[H+] = √(Ka . Ma)

[H+] = √(1.5 x 10¯⁵ . 0.0250)

[H+] = 6.12 x 10¯⁴ M

Substituting the value of [H+] to get the pH

pH = -log[H+]

pH = -log(6.12 x 10¯⁴)

pH = 3.21

Hence, the pH of the weak acid c3h7cooh is 3.21

Find more on pH at: brainly.com/question/14466719

#SPJ4

8 0
1 year ago
4,11,6,9,23,34,6,9
ludmilkaskok [199]

Answer: 9

Step-by-step explanation:

If you put all the numbers in order from least to greatest 9 is in the middle.

4 0
4 years ago
Read 2 more answers
The product of two numbers is 21. If the first number is -3 which equation respents this situation and what is the second number
Vaselesa [24]

Let the second no. be x

-3x = 21 → x = 21/-3 → x = -7

4 0
1 year ago
1. Renting a bicycle at a local Bike shop costs $30 for the first day and $10 for each additional day.
Elza [17]
<span>(a) Create a chart of values and write an equation to find the total cost, C in terms of the number of days d.

C = 10d + 20

</span><span>(b) Use the equation you created in Part (a) to find the cost of renting a bike for 5 days.
</span>
C = 10d + 20
<span>C = 10(5) + 20= 50 + 20 = 70

$70 for 5 days

</span>
7 0
3 years ago
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